no deben

you don't owe

you mustn't

no deben

phrase

1. (third person plural; you have no debt)

a. you don't owe

Si no deben dinero, no es necesario que presenten una declaración de impuestos.

Filing a tax return isn't required if you don't owe money.

2. (third person plural; used to express obligation)

a. you mustn't

No deben llegar tarde a clase.

You mustn't be late for class.

3. (third person plural; used to make a suggestion)

a. you shouldn't

No deben irse de nuestra ciudad sin probar nuestros deliciosos panqueques.

You shouldn't leave our city without trying our exquisite pancakes.

4. (third person plural; used to express logical conclusion)

a. you can't

Ustedes no deben ser los padres de Tomás, ¿no? Son muy jóvenes. - ¡Somos los hermanos!

You can't be Tomas parents, right? You're too young. - We're his siblings!

5. (third person plural; used to express absence of obligation)

a. you needn't

¿Tenemos que leer todo el libro para la semana próxima? - No, no deben leerlo todo. Solo el primer capítulo.

Must we read the whole book for next week? - No, you needn't read it all. Just the first chapter.